Cheapest electricity plans in South Australia
Compare electricity providers in South Australia and see estimated annual bills based on average household usage. Finding a cheaper electricity plan can save hundreds of dollars per year. Average electricity rates in SA are currently around 32.1c/kWh with a typical annual bill of $1,580.
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Reference bill assumptions
Estimated annual bills below are calculated for a typical South Australian 2–3 bedroom household using approximately 4,380 kWh per year (12 kWh/day). Individual bills will vary based on actual usage, discounts, and your specific plan terms.
Electricity providers in South Australia — estimated annual bills
| Provider | Avg rate (c/kWh) | Supply charge ($/day) | Est. annual bill | Rating |
|---|---|---|---|---|
CheapestSimply Energy | 27.4c | $0.97 | $1,435 | 3.9 |
| 27.5c | $0.98 | $1,430 | 4.4 | |
| 27.6c | $0.99 | $1,440 | 3.8 | |
| 27.8c | $1.00 | $1,445 | 3.7 | |
| 28.2c | $1.02 | $1,475 | 3.7 | |
| 28.5c | $1.05 | $1,490 | 3.8 | |
| 29c | $1.05 | $1,510 | 3.9 |
* Estimated annual bills are indicative only, based on reference usage assumptions above. Rates and plans change regularly — compare live plans for current pricing.
Electricity market in South Australia
South Australia has a competitive retail electricity market. Electricity prices in SA are among the highest in Australia, making comparison particularly valuable.
The AER sets a reference price for SA. Consumers are encouraged to compare market offers against this benchmark.
How to compare electricity plans in South Australia
- 1
Check your current rate
Find your current usage rate (c/kWh) and daily supply charge on your electricity bill. This is your benchmark for comparison.
- 2
Enter your postcode
Use our comparison tool and enter your South Australia postcode to see plans available in your area.
- 3
Compare estimated annual costs
Look at the estimated annual bill for your usage level, not just the headline rate. Supply charges and usage tiers all affect your total cost.
- 4
Check contract terms
Some cheaper plans have no exit fees; others lock you in. Read the plan's Basic Plan Information Document (BPID) before signing up.
- 5
Switch online
Most retailers let you switch online in minutes. Your new retailer arranges the change and supply is not interrupted.
Why do electricity prices differ across South Australia?
Electricity prices in South Australia vary for several reasons:
- Distribution network: Your local distributor's network charges vary by region within SA. Metropolitan areas often have different distribution costs to regional or rural areas.
- Retailer margin: Each retailer adds its own margin to the wholesale electricity cost and network charges. Smaller or newer retailers sometimes offer sharper pricing to attract customers.
- Usage tier structure: Some plans charge different rates depending on how much electricity you use. High-usage households may benefit from plans with a lower step-one rate.
- Contract type: Fixed-rate plans lock in a rate for 12–24 months, while variable plans can change. Fixed plans offer price certainty; variable plans sometimes offer lower rates but can increase.
- Solar feed-in tariff: If you have rooftop solar, the feed-in tariff rate affects your net bill. Comparing both the usage rate and the feed-in rate is important for solar households.
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Frequently asked questions
What is the cheapest electricity plan in South Australia?
The cheapest electricity plans in South Australia vary based on your usage, location, and whether you have solar. Based on average usage rates, Simply Energy typically offer some of the most competitive rates. Use our comparison tool to find the best current offer for your postcode.
How is "cheapest" electricity assessed in South Australia?
Cheapest is assessed by comparing the estimated annual electricity bill for a typical South Australian 2–3 bedroom household, based on the provider's average usage rate (c/kWh) and daily supply charge. Individual bills vary based on actual usage, discounts, and plan terms.
Can I switch electricity providers in South Australia?
South Australia has a competitive retail electricity market. Electricity prices in SA are among the highest in Australia, making comparison particularly valuable. Switching is free, straightforward, and does not interrupt supply.
What is the reference price in South Australia?
The AER sets a reference price for SA. Consumers are encouraged to compare market offers against this benchmark.
How much does electricity cost in South Australia per kWh?
Average electricity rates in South Australia are approximately 32.1c/kWh, with an average daily supply charge of $1.12. Average annual bills are around $1,580.
How do I find the cheapest electricity plan for my home in South Australia?
Use our free comparison tool and enter your postcode. You can compare current plans from retailers available in your area, sorted by estimated cost for your usage level.
Last updated: 8 March 2026. Rates are indicative estimates based on published plan data.